AP-41 [FIX] Send all B2S letters to hub
AP-41 [FIX] Send all B2S letters to hub

- fields email_read and letter_delivered don't exist
  outside compassion-switzerland additions

ecino/compassion-modules,ecino/compassion-modules,eicher31/compassion-modules,CompassionCH/compassion-modules,ecino/compassion-modules,CompassionCH/compassion-modules,ecino/compassion-modules,eicher31/compassion-modules,ecino/compassion-modules,eicher31/compassion-modules,CompassionCH/compassion-modules,CompassionCH/compassion-modules,eicher31/compassion-modules,eicher31/compassion-modules